SGM4062.pdf
No.10958
● Input Overvoltage Protection
● Accurate Battery Overvoltage Protection
● Output Short-Circuit Protection
● Soft-Start to Prevent Inrush Currents
● Soft-Stop to Prevent Voltage Spikes
● 24V Maximum Input Voltage
● Supports up to 1.5A Load Current
● Thermal Shutdown
● Enable Function
● Fault Status Indication
● Available in Green TDFN-2×2-8L Package
The SGM4062 is a charger front-end integrated circuit designed to provide protection to Li-ion batteries from failures of the charging circuitry. The IC continuously monitors the input voltage and the battery voltage. The device operates like a linear regulator, maintaining a 5.1V output with input voltages up to the Input overvoltage threshold (VOVP = 6.8V). During input overvoltage conditions, the IC immediately turns off the internal pass FET disconnecting the charging circuitry from the damaging input source. Additionally, if the battery voltage rises to unsafe levels while charging, power is removed from the system. The IC checks for short-circuit or overload conditions at its output when turning the pass FET on, and if it finds unsafe conditions, it switches off, and then rechecks the conditions. Additionally, the IC also monitors its die temperature and switches off if it exceeds 150°C. When the IC is controlled by a processor, the IC provides status information about fault conditions to the host.
The SGM4062 is available in Green TDFN-2×2-8L package and is rated over the -40°C to +85°C temperature range.
